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By nisha
#2467
A meter or device that could detect the smell of the restroom after someone... does their business. If the smell is strong and pungent it will warn people not to come inside and it would tell people when it is okay to come in.

Reward: I'd like to see it done.
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By Michael D. Grissom
#2541
That reminded me of my favorite Gary Larson cartoon:
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